(19)
(11) EP 2 518 521 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
25.10.2017 Bulletin 2017/43

(43) Date of publication A2:
31.10.2012 Bulletin 2012/44

(21) Application number: 12165652.4

(22) Date of filing: 26.04.2012
(51) International Patent Classification (IPC): 
G01R 31/08(2006.01)
 G01R 31/12(2006.01)
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
Designated Extension States:
BA ME

(30) Priority: 29.04.2011 US 201113098186

(71) Applicant: General Electric Company
Schenectady, NY 12345 (US)

(72) Inventor:
  • Ganesh, Meena
    Niskayuna, New York 12309 (US)

(74) Representative: Cleary, Fidelma 
GPO Europe GE International Inc. The Ark 201 Talgarth Road Hammersmith
London W6 8BJ
London W6 8BJ (GB)

   


(54) System and device for detecting defects in underground cables


(57) A system (10) and device (46) for detecting insulation defects in a cable (20) are provided. The system (10) and device (46) include using signals received from sensors (36, 38) to detect a partial discharge caused by insulation defects in a cable (20). The system is passive, without signals being injected into system cables (20), and may use one or more sensors (36, 38), data acquisition systems (44, 46), gateway devices (52), and monitoring stations (54) and is based on detecting partial discharge from insulation defects and reporting the detection when it occurs.







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